MC68040FE33A Freescale Semiconductor, MC68040FE33A Datasheet - Page 237

IC MICROPROCESSOR 32BIT 184-CQFP

MC68040FE33A

Manufacturer Part Number
MC68040FE33A
Description
IC MICROPROCESSOR 32BIT 184-CQFP
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68040FE33A

Processor Type
M680x0 32-Bit
Speed
33MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
184-CQFP
Package
184CQFP
Processor Series
M680xx
Core
CPU32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
 Details

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68040FE33A
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
8.4.6 Access Error Stack Frame (Format $7)
A 30-word access error stack frame is created for data and instruction access faults other
than instruction address errors. In addition to information about the current processor
status and the faulted access, the stack frame also contains pending write-backs that the
access error exception handler must complete. The following paragraphs describe in
detail the format for this frame and how the processor uses it when returning from
exception processing.
8.4.6.1 EFFECTIVE ADDRESS. The effective address contains address information when
one of the continuation flags CM, CT, CU, or CP in the SSW is set.
8.4.6.2 SPECIAL STATUS WORD (SSW). The SSW information indicates whether an
access to the instruction stream or the data stream (or both) caused the fault and contains
status information for the faulted access. Figure 8-7 illustrates the SSW format.
8-24
CP
15
SP
+$02
+$06
+$08
+$0A
+$0C
+$0E
+$10
+$12
+$14
+$18
+$1C
+$20
+$24
+$28
+$2C
+$30
+$34
+$38
CU
14
WRITE-BACK 1 DATA/PUSH DATA LW0 (WB1D/PD0)
15
0 1 1 1
$00
$00
$00
WRITE-BACK 3 ADDRESS (WB3A)
WRITE-BACK 2 ADDRESS (WB2A)
WRITE-BACK 1 ADDRESS (WB1A)
13
CT
ACCESS ERROR STACK FRAME
SPECIAL STATUS WORD (SSW)
WRITE-BACK 3 DATA (WB3D)
WRITE-BACK 2 DATA (WB2D)
Stack Frames
EFFECTIVE ADDRESS (EA)
PUSH DATA LW 1 (PD1)
PUSH DATA LW 2 (PD2)
PUSH DATA LW 3 (PD3)
(30 WORDS)–FORMAT $7
FAULT ADDRESS (FA)
PROGRAM COUNTER
STATUS REGISTER
CM
12
WRITE-BACK 3 STATUS (WB3S)
WRITE-BACK 2 STATUS (WB2S)
WRITE-BACK 1 STATUS (WB1S)
VECTOR OFFSET
Figure 8-7. Special Status Word Format
MA
11
Freescale Semiconductor, Inc.
For More Information On This Product,
ATC
10
M68040 USER’S MANUAL
Go to: www.freescale.com
LK
9
0
RW
• Data or Instruction Access
8
Fault (ATC Fault or Bus
Error)
Exception Types
7
X
6
SIZE
5
4
• Next Instruction
TT
Stacked PC Points To
3
2
MOTOROLA
TM
1
0

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